关键词: 大坝, 监测, 健康诊断, 不确定性, 信息熵

Abstract: Dam health diagnosis is a complicated nonlinear problem with a variety of uncertainty, and it is difficult to describe the uncertainty by the existing health diagnosis methods. Based on connotation analysis of the uncertainty in monitoring information, the information entropy, which is a specialized theory for uncertainty problems, is introduced to research dam health diagnosis. And some new ideas are provided, such as, the index weight (entropy weight) of dam safety comprehensive evaluation can be determined by the basic concept of entropy, the abnormal situation contained in the monitoring information can be recognized by the concept of mutual information, and the composite uncertainty problems in dam health diagnosis can be studied by the concept of fuzzy entropy.

Key words: dam, monitoring, health diagnosis, uncertainty, information entropy